diff --git a/materia/forms.py b/materia/forms.py
index e8bc7389d..186c6ba09 100644
--- a/materia/forms.py
+++ b/materia/forms.py
@@ -121,6 +121,8 @@ class DocumentoAcessorioForm(ModelForm):
         fields = ['tipo', 'nome', 'data', 'autor', 'ementa', 'arquivo']
         widgets = {'autor': forms.HiddenInput()}
 
+        widgets = {'autor': forms.HiddenInput()}
+
     def clean_autor(self):
         autor_field = self.cleaned_data['autor']
         try: